“Natural” risks and catastrophes appeared in the international arena in the early 1990s. A real « world » of “natural” catastrophes has emerged internationally and has become more and more institutionalized. This study raises questions such as: how has this space been built? How do actors legitimize its necessity? What does it tell us about the way the contemporary world manages fears globally? A diachronic approach of this double process of internationalization and institutionalization allows the author to situate the phenomenon in the historical and global context, and notably of a context of transformation of the notion of security. The sociological analysis of the main multilateral organizations that contribute to forming this space invites us to apprehend the various lines of tension that cross over, and to foresee its complexity. Despite the many attempts to make this space appear as a “community” of sense and practices, strong disparities characterize the actors’ approaches.

The peace agreements that were signed in May 2004 may imply the end of the war in South Sudan. In order to assess the likelihood of success, one has to discuss the changes after the Islamists were brought to power in 1989 by a military coup. Of special interest are the impacts of their internal divisions, the emergence of oil money as significant revenues for the State and the consequences of 9/11 in the Middle East. Moreover, difficulties to implement the agreements in South Sudan should not be underplayed. The underdevelopment of this region, the existence of militias still supported by Khartoum and the history of the civil war among Southern Sudanese could give room to bitter divisions and proxy wars involving Khartoum’s government. The current crisis in Darfur reflects the weaknesses of the peace process despite a strong international involvement. Structural issues such as citizenship have not been addressed and this very crisis shows how little the regime intends to reform itself.